From cff081c6dbdeed721ad5fd59943e9a020a9299af Mon Sep 17 00:00:00 2001 From: Vitali64 Date: Tue, 28 Dec 2021 19:23:10 +0100 Subject: Fix grub's slow boot On many boards, grub takes a very long time to search for a grub.cfg file on the disk. The problem is the search_grub function which takes a long time to complete. I (vitali64) studied the grub.cfg from 2016 and the grub.cfg from 2021 and optimized the grub.cfg. It should be faster now. --- resources/grub/config/grub.cfg | 25 +++++++++++++++++-------- 1 file changed, 17 insertions(+), 8 deletions(-) (limited to 'resources/grub/config') diff --git a/resources/grub/config/grub.cfg b/resources/grub/config/grub.cfg index 37b83728..5cda2329 100644 --- a/resources/grub/config/grub.cfg +++ b/resources/grub/config/grub.cfg @@ -47,16 +47,25 @@ function try_user_config { } function search_grub { echo -n "Attempting to load grub.cfg from: " - unset ddev - if [ (${1}?) != "(${1}?)" ]; then - ddev=(${1}*) # Both raw and partitioned devices - fi - for i in ${ddev}; do - echo -n "${i} " - try_user_config "${i}" + # TODO : Find a better way to detect how many disks + # : are on the computer instead of hardcoding. + # FIXME: Does this work on all boards? + for i in 0 1 2 3 4 5 6 7 8 9 10 11; do + # TODO : Find a better way to detect how many partitions + # : are on the disk instead of hardcoding. + echo "\nTrying disk ${1}${i}" + for part in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20; do + # MBR/GPT partitions + echo "\nTrying partiton ${part}" + try_user_config "(${1}${i},${part})" + done + # raw devices + echo "\nTrying to boot to a raw disk ..." + try_user_config "(${1}${i})" + echo # Insert newline done - echo # Insert newline } + function try_isolinux_config { set root="${1}" for dir in '' /boot; do -- cgit v1.2.1